Gideon feisbee



(No ModeL) G. PRISBEE.

MILL FOR PULVERIZING QUARTZ. I No. 337,570. Patented Mar. 9, 1886.

llNirsn STATES PATENT Qrrrcaf GID-EONFRISBEE, or-Nnw roan, N. Y. Q

MILL FOR PULVERIZING QUARTZ.

SPECIFICATION forming part of Letters Patent No. 3 3 7, dated March 9, 1886;

Application filed October 9, 1885. Serial No.179,384. (No model.)

To aZZ whom it may concern:

3e it known that I, GiDEoN FRISBEE, a citizen of the United States, at presentresiding in the city. county, and State of'New York, have invented certain new and useful Improvements in Mills for Pulverizing Quartz and Similar Substances, of which the-following is a description in' such full, clear, concise,

and exact terms as to enable any one skilled 'in the arts to which it appertains, or with which it is most nearly connected, to make and use the same, reference being bad to the accompanying drawings. making part of this specification, and to the figures and letters of- It must not be understood that these draw-' ings and specification are intended as a de scription and illustration of the entire mill, as that is not the intention.

The mill is now well known in the market as the Frisbee-Lucop Mill, and this is intended as an illustration and description of an improvement upon that mill, only so much and such parts of the mill, as a whole, being shown and described as to enable any one skilled in the arts to distinguish this improvement from what was previously contained in the construction and operation of the mill.

Referring to the drawings, F is the outside casing of the mill; E, the ring against which the grinding and pulverizing is done.

B B are the grinding and crushing rollers, operating against the inside surface of the ring E.

A A are carriers or disks secured upon a central shaft, S, and between which the rollers B are held.

D is an arm, also secured upon the central shaft, and to which the disks are secured by means of bolts passing through the holes Z of the arm D, and corresponding holes in each disk. The disks and the arm are thus bolted together solid. The disks rotatein the direction of the arrow and carry with them the rollers B and arm or guard l),which serves to prevent the roller from dropping to the bottom of the retaining-cylinder and holds it in its proper relative position in the mill.

Now, by Letters Patent of the United States dated July 17, 1885, No. 321,429, I obtained a claim for the combination of circular driv ing-segments with the disks and rollers, for the purpose of driving the rollers, as explained in that patent, and to which reference is. here made for a full explanation of the purpose and operation and construction of these driversegments. Now, these driving-segments serve a very good purpose, as a rule; but I find in some cases that the ends of these segmental drivers in carrying the rollers wear off obliquely to the plane of their sides, by which the crushing-rollers are thrown out of line,

afld the edges of their ends cut grooves in the inside surfaces of the disks A. The segmental drivers in that case have to be thrown away, and in some cases the disks also. Now, to avoid this difficulty I have made this improvement, which consists of cast-iron cylinders P, set in between the carriers or disks in the place of the segmental drivers, and secured there by any suitable,

means-such as bolts f, passing through their centers and through both disks-the disks and rollers being bolted hard together, the cylinders P being made a shade longer than the rollers B, leaving the latter tree to turn between the disks or other carriers. By these means, in case the rollerin wearing the cavity in the cylinder P (shown by the curved dotted line k) cuts deeper in one end of the cylinder than the other, so as to throw the roller out of line, the boltsf are loosened, and the cylinder P turned upon its axis until a new surface is presented to the rollers, by which the latter is brought back in line between the disks, and so on until the cylinder is entirely worn out.

To hold the cylinder securely in its place, I make at the end or ends thereof, on its axial line, a projection having square or angular sides, as shown by b, Fig. 2, fitting into a corresponding cavity in the carrier; or, instead of such projection, I may make a cavity, as shown by b, on the end of the cylinder into which a corresponding projection on the carrier fits. These angular or flat-sided projections are to serve adouble purpose. They not only hold the cylinder in position, but they serve as a gage to determine the distance the cylinder is to be turned whenever; the cavity becomes worn so large or so crooked as to make it necessary to present a new drivingsurface.

As above stated, I secure the cylinder and the carrier or disks together in such a manner as to prevent the cylinder rotating on its axis. If a roller be used in the place ot'a stationary cylinder such as described, such roller after a time outs away its journalbearings in the carrier, and the carrier as well as the roller has to be renewed. Besides, if the crushingroller wears more upon one end of the driving-roller than the other it is necessary to throw the driving-roller away, whereas in the case of the cylinder which I have adopted a true surface is presented by turning the cyl' inder as described, and the crushing-roller is brought back to its normal position and adjustment.

Having thus described my improvement and its application to the mill, I designate the points of novelty in the following claims:

1. In a pulverizingmill, the combination of a crushing ring, a driving-cylinder stationary in its support, means for supporting said cylinder and revolving it about the center of the crushingring, and a loose crushing-roller propelled by said driving-cylinder, substantially as described.

2. In a pulverizing-mill, the combination of a crushingring, revolving disks, stationary driving-cylinder carried thereby, and a loose 5. In a pulverizing-mil], the combination of a crushing-ring, a loose crushing-roller contained therein, a stationary driving-cy1inder, aguard to prevent said roller falling away from said driving-cylinder when the mill is stopped, and a suitable carrier operating and supporting the same, substantially as described.

GIDEON FRTSBEE.

Witnesses:

J. EDGAR BULL, DA OBQE: 

